Improvement in expawsiow-joints for tubular water fire-bars



F. R. ELLIS. ExPANsIoN-JoiNT FOR TUBULAR WATER FIRE BARS.

Patented May 29,1877.

' No.191,3Z5.'

FIG 6.

I' V NT RQ [XWCQZZ N-Pa ERS. PHOTO-LITNDGRAPHER. WASMINGYON, D. C.

FREDERICK ROBERT ELLIS, OF LIVERPOOL, ASSIGNOR TO GEORGE HAWORTH, OF ST.MIOHAELS HAMLET, ENGLAND.

IMPROVEMENT IN EXPANSION-JOINTS FOR TUBULAR WATER FIRE-BARS.

Specification forming part of Letters Patent N oll9i,325, dated May 29,1877 application filed August 11, 1876.

To all whom it may concern:

Be it known that I, FREDEEIoK ROBERT ELLIS, of Liverpool, in the countyof Lancaster, in that part of the United Kingdom of Great Britain andIreland called England, have invented a new and valuable ImprovedExpansion Joint for Tubular Water Fire- Bars; and I do hereby declarethe following is a full, clear, and exact description of theconstruction and operation of the same, reference being had to theannexed sheet of drawings, making a part of this specification, and tothe letters and figures of reference marked thereon.

Like letters represent like parts.

Figure 1 is a side elevation of a portion of a tubular-water fire-barand bearer with my improved expansion joint applied thereto. Fig. 2 is asection of my improved expansionjoint piece or link. Fig. 3 is a sideelevation of a portion of a tubular water fire-bar and bearer insection, with my improved expansion-joint applied thereto. Fig. 4 is apart sectional plan of Fig. 3. Fig. 5 is a part outside plan of Fig. 3.Fig. 6 is a sectional plan of my improved expansion-joint piece or link.Fig. 7 is an end view of my improved expansion joint or link; Fig.8, asectional end view of my improved expansion joint or link. Fig. 9 is anoutside end View of a tubular water fire-bar. Fig. 10 is an end sectionof a tubular water fire-bar.

My invention consists in the introduction of the link-piece a betweenthe fire-bar b and the bearer 0, so as to form an expansion-joint, andcompensate for the contraction and expansion and inequalities of thefire-bar bin relation to the front bearer c.

In applying my improved link-piece, the

"side d is faced so as to make joint with the bearer c. The link piece ais held to the bearer c by the bolt h.

The fire-bar b and link-piece a are secured together by the fish-platesk. The ends of the tube 8 are provided with copper ferrules o, to makejoint in the link-piece a. (See Fig. 2.)

By the use of my expansion-joint or linkpiece the joint at d between thelink a and the bearer 0 can be made, and will always remain, sound andtight, and will not be affected by the expansion or contraction of thebar I), nor by any irregular strain caused by bringing the face of thebar I) to the face of the bearer c, which is the great defect in tubularwater fire-bars now constructed.

Having now described the construction and operation of my invention, Ibeg to state that I disclaim all other expansion-joints now in use; but

What I claim as my invention is as follows:

The intervening link a, combined with and located between the end of thegrate-bar and the Water head or bearer c, by which the joint between thepipes s s and the water-head at d is prevented from breaking by theexpansion or warping of the bar.

In witness whereof I, the said FREDERICK ROBERT ELLIS, have hereunto setmy hand and seal this ninth day of June, one thousand eight hundred andseventy-six.

FREDERICK ROBERT ELLIS. [L. s.]

Witnesses:

FREDERICK J OHN OHEESBROUGH, J OHN HAMILTON BEDMoND, Both of 15 WaterStreet, Liverpool, England.

